THE EFFECTS OF TEMPERATURE ON THE SUCROSE THRESHOLDS OF THE TARSAL CHEMORECEPTORS OF THE FLESH FLY, SARCOPHAGA BULLATA

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Abstract
1. The effects of temperature on the sucrose thresholds of the tarsal chemoreceptors of the flesh fly were studied. Flies were mounted on rods and the thresholds determined in a constant temperature chamber at 19-21° C., 27-29° C. and 37-39° C. 2. A total of 748 flies (313 males and 435 females) were subjected to 8241 tests. 3. The median threshold at 19-21° C. was 0.14 M, at 27-29° C. was 0.06 M, and at 37-39° C. was 0.17 M. 4. On the basis of these data, no definite stand can be taken on the limiting mechanism of tarsal chemoreception.